Improvement in cooking-stoves



' SHEAR & PACKARD.

Cooking Stove.

. No. 87,302. Patent d Feb. 23, 1869.

Witnesses Inventor-S:

N. PETERS, PHOTO-LITHOGRAPHER, WASHINGTON. D c.

JACOB H. SHEAR AND JOSEPH PACKARD, or ALB Letters Patent l Vo. 87,302, dated February 23, 1869.

I Y, NEW Yon-K.

IMPROVEMENT m cooKrNG-srovns.

The Schedule referred to in thele Iwtteu Patent'and making part of the em To all whom it may concern Be it known that we, J AOOB H. SHEAR and JOSEPH PACKARD, of Albany city and county, and. State of New York, have invented a new and useful Improvement in Cooking-Stoves; and we do hereby declare'that the following is a full and exact description of the same, reference being had to the accompanying drawings, and to the letters of. reference marked thereon;

The object of our improvement is to apply heated air within the body of the burning coal, in an elongated fire-box, so that at and near the ends of the firebox, and beneath the surface of the burning fuel, a current of heated air may be supplied to aid in the combustion of the coal.

Experience has demonstrated that, in stoves having an elongated fire-box, the coal near the ends of the fire-box remains unburned, while near the centre of the box it is very perfectly consumed.

To remedy this difiiculty, we have provided conduct ing-tnhes, as seen in Figure 1, b b, which, taking heated air from a chamber in the rear and above the fire-box, conduct .the same beneath'the surface of the coal, at and near the ends ofthe fire-box, and produce complete or very perfect combustion.

In our present improvement we admit the air into a chamber in the top plate of the stove, above the fire,

- where, being heated, it is taken down, through this chamber, and conducted to near the bottom of. the firebox, where it is discharged, through tubes or pipes, into the midst of the fuel in the fire-box, and beneath the surface of the same.

By these means the dying out of the fire at the end of the elongated fire-box is prevented, the coal in that part of the box is utilized, and a great savingis thereby effected.

In the accompanying drawings- Figure 2 presents a sectional view of the chamber in the top plate of the stove, as seen at m m, and the tube connecting the chamber in the top plate with that beneath, out of which the tubes b 6 take the heated air, as above stated.-

i The arrows and dotted lines 'in' fig. 2 indicate the direction of the currents of air, as they enter thechamher and are conducted to the interior of the mass of coal near the ends of the fire-box, where they meet currents of cold air admitted through the grate, and

thereby produce intense heat and very perfect com-' bustion. I

flhe air-chamber at the top of the stove, and its conmotions, are exposed to the direct heat of the fires, and it becomes heated, causing the currents of airpassing through them likewise to become highly heated.-

By this method of applying heated and cold air beneath the surface of the burningfuel, we secure a bright, lively, and etfective fire 0r combustionin all parts of the fire-chamber.

We do not claim broadly the introduction of currents of heated or cold air into the fire-chamber, or upon the surface of the burning fuel; but

What we do claim as our own, and desire to secure by Letters Patent, is-

1. The admission of heated air from the top of a stove or range having an elongated fire-box, through a hollow chamber or chambers, passing 'it directly into the burning mass of coals near thebottom and at each end of said elongated fire-box, substantially in the manner and for the purposes above described.

2. The admission of heated air from the top of the stove or range, having'an elongated fire-box, through a chamber or chambers, directly into the burning mass of coals near the bottom and at each end of said firebox, in combination with currents of air admitted through the front draught, under the grate, substantially in the manner and for the purposes above described.

- JACOB H. SHEAR.

JOSEPH PAQKARD.

I Witnesses:

ISAAC FINDEY, FRANK LnonARD. 

